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G. E. BAIRD, 'DEC'D.

F. s. BAIRD, ADMINISTRATRIX.

DISPLAY DEVICE.

APPLICATION HLED JUNE ZG, I913.

Patented Aug. 1, 1916.

provide one or ATIENT TED STATES l GEORGE E. BAIRD, OF PEORIA, ILLINGIS;FLGBE G TRIX OF SAID GEORGE E. BAIBD, DECEASED, T0 ALBERT R. MAGKUSIGK,

033 BOSTON, MASSACHUSETTS.

DISPLAY DEVICE.

mes rat.

Application filed June 26, 1913.

To all whom it "may concern lie it known that I, GEORGE E. BAIRD,citizen oi the United. States, residing at Peoria, in the county ofPeoria and State of Illinois, have inrcnted certain new and usefulTmprovements in Display Devices; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to a device for display purposes.

It pertains more particularly to a device comprising one or more vanesadapted to oscillate and provided with matter on each side to bedisplayed and adapted by certain mechanism to be moved to exposeopposite surfaces alternately to view.

It pertains still more particularly to a device including one or morevanes or wings carrying display matter adapted to oscillate and a mainrotating part in control of certain mechanism to impart oscillation tosaid vanes or wings to alternately expose opposite surfaces at eachmovement of said mechanism.

The main object of the invention is to more vanes or wings with matteron opposite sides to be displayed and to furnish a member adapted. torotate in but one direction in an intermittent man her, and certainmechanism in connectlon therewith and in control of the vanes or wingsfor oscillating said vanes or wings to display the matter carried bythem.

Another object is to provide a device com- 'irising one or more vanes orwings carrying matter on arch side to be displayed combining therewith amember adapted to rotate in but one direction, and a weight orequivalent member constantly tending to rotate said member and means tocause at will the release and movement of the same to change thepositions of the vanes or wings.

desides this the invention relates to certain details of construction tobe described in the following specification and pointed out in theappended claims.

In the accompanying drawing Which illustrates my invention, Figure 1shows the device in perspective as seen from the rear.

Fig. 2 is a side elevation of the same. Fig.

Specification of Letters Patent.

Fatonted Aug. it, 1916.

Serial no. 775.942.

0 is a vertical section of a part of the device .how1ng two vanes orwings and a connecting member for the same, and Fig. 4 is a. sideelevation of a part of certain gearing shown in 2 much enlarged in size.

A indicates a suitable framing which, for example, as in the presentinstance, may consist of angle iron bent into a rectangular form. One ofits parts is provided with suitable holes B to attach it to any suitablesupport, not shown, said frame being held in an upright or verticalposition.

0 indicates a series of vanes or wings provided at their ends with anysuitable member D secured thereto or forming a part of the same andconstituting pivots which extend through and are carried by the saidframe A.

E is a bracket secured to the frame and oreferably provided with a studE. Mounted on the stud is a scape-wheel F the structure of which will bedescribed later herein. Mounted upon a cross member G of the bracket Eis a gear H and adjacent thereto and in mesh with it is a pinion Jsecured on the pivot-member D, for example, of one of the vanes C. Thegear H is provided on its surface adjacent the scape-wheel F with aprojecting cam portion K. This extends across the face of said wheel andhas a curved surface'L. Extending from the side of the scape-wheeltoward said wheel H are two series of lugs M N. The series M lie in acircle near the outer edge of the wheel, while the series N is spacedinward therefrom and alternate in position. That is to say, the lugs ofone series lie opposite the spaces between the lugs of the other seriesso that in the rotation of the wheel i the lugs alternately engage thecam portion K which lies in the path of the same. The axis of the gear.l-l lies midway between the two lines or series of lugs so that, forexample, a lug M will rotate said gear in one direction and a lug N willimpart movement in the opposite direction from the fact that the twosaid series of lugs lie at opposite sides of the axis of rotation. Thisis clearly illustrated in Fig. i wherein the lug N is in engagement withthe cam portion K and in the act of rotating the gear H in the directionof the dart or counter clockwise. The scape-wheel F rotates in thedirection of the dart shown adjacent thereto and a continued movement ora further movement of the wheel F results in one of the lugs M meetingthe cam K a the other side of the axis of rotation of the wheel H andoscillating the latter in an opposite direction. The distance the wheelH is moved is always a definite one and in this instance may bedetermined by the limit imposed by the edges of the vanes meeting oneanother, their edges overlapping for this purpose, or by means of asuitable pawl arrangement; it being required that the vanes when at restshall always lie substantially in the same plane.

The scape-wheel is rotatably mounted on the described stud E of thebracket E and adjacent to it is a winding drum O also rotatably mountedindependent of said wheel. A cable P carrying a weight Q, is attached tothe drum. One of the flanges O of the drum is provided with a series ofnotches R, and S is a pawl carried by the scape-wheel and adapted toengage any one of the said notches. The cable when wound upon the drumimparts rotation to the wheel F through said pawl, the latter permittingthe drum to be rotated to take up the cable independently of the wheel.

The outer periphery of the scape-wheel is furnished with a series ofratchet teeth T spaced from one another a distance equal to the distanceof travel to be imparted to said wheel and to the gear H. And therelation of the gear H and pinion J with regard to the number of teethon each is such that in the partial rotation of the gear H said pinionwill rotate a distance sufficient to cause a half rotation of the vanesor wings.

U is a bracket secured to and extending outward from the frame A. Thissupports an electromagnet V to which is pivoted an armature carrying apawl provided with two extensions 2, 3. The former engages one of theteeth of the scape wheel preventing movement thereof due to the weight,while the extention 3 has such a relation to the scape-wheel that whenthe latter is moving, the extension 2 of the pawl being lifted, one ofthe teeth of the scape wheel meet said extensions 3 and move it upwardresulting in positively moving the end 2 down into position to meet thenext tooth aided by gravity. This also insures against the armaturesticking or the failure of the pawl to stop the rotation of the saidscape-wheel. One of the members D of the vanes C is provided with asuitably weighted arm 4 lying normally at right anglesto the plane ofthat vane. The purpose of the said weighted arm is that the vanes willbe prevented from oscillating on their pivots due to air currents,the'weight being suflicient for this purpose although said arm may notbe used. In order that all of. the vanes shall move simultaneously theyare connected through a rod 5 by means of eyes 6 thereon which engage inholes 7 in corresponding edges of the vanes. Thus when the vane operatedby the pinion J is turned all of the vanes must move in synchronism.

The electromagnet V is connected with any source of electric currentthrough wires 8 and a contact maker at 9 serves to close the circuitwhenever it is the desire to op erate the vanes.

The vanes may be oscillated at regular intervals automatically by anydesired means but in the present instance it is entirely un der thecontrol of the operator and when so operated it is adapted for use onball fields and other places where information is to be given. Uponclosingthe circuit through the electromagnet the armature W is lifted.The weight Q is thus permitted to exert its pull by rotating the scapewheel thus causing one of the lugs M N to meet the cam K and impart apartial rotation to the gear H and through it substantially one halfrotation is imparted to the pinion J, or a. distance suflicient to movethe vanes through a one-half turn.

As shown by broken lines in Fig. 2, and as already stated, the pawl 2,3, at this time has been raised at that end engaging the ratchet teethof the scape-wheel, the other end being moved into the path of the saidratchet teeth so that it will positively be thrown outward to bring theextremity 2 back to position to engage and hold the next tooth of saidscape-wheel. In the succeeding operation a lug of an opposite serieswill engage the cam of the gear H at the opposite side of its axisthereby rotating said wheel a portion of a revolution in a directionopposite to that in which it was first moved. This likewise imparting anopposite direction of movement to the said pinion. Opposite sides ofthese vanes are thus alternately brought to view.

lVhile I have described a preferred structure for oscillating the vanesI may use other equivalent structures and in place of the electromagnetand armature as the tripping means, since others may be substituted andthe device may be otherwise changed within the scope of the claimswithout departing from the spirit and intent of the invention.

Having thus described my invention, I claim 1. In a device of thecharacter described, in combination, a support, a vane or wing pivotedthereon, a pinion fixed relatively to the said vane at the pivotthereof, a gear in mesh with said pinion and having a part lying at eachside of its axis of movement, a member adapted for a single direction ofmovement and including two series of ex tensions, said two series ofextensions lyingat opposite sides of said axis of movement of the gear,the extensions of each series adapted to alternately engage the saidpart of said gear.

2. In a device of the character described, in combination, a support, avane or wing pivoted thereon, a pinion fixed relatively to the said vaneat the pivot thereof, a gear in mesh with said pinion having a partlying at each side of its axis of movement, a member adapted for asingle direction of move ment and including two series of extensions,said two series lying at opposite sides of said axis of movement of thegear, said extensions of the two series of extensions adapted toalternately engage the said part of said gear, and means to impartrotation to said member in a single direction.

3. In a device of the character described, in combination, a support, avane or wing pivoted thereon, a pinion fixed relatively to the said vaneat the pivot thereof, a gear in mesh with said pinion having a partlying at each side of its axis of movement, a rotatable member includingtwo series of extensions, said two series lying at opposite sides ofsaid axis of movement of said gear, the said extensions of the twoseries of extensions adapted to alternately engage the part on saidgear, and means constantly tending to impart rotation to said member ina single direction.

4. In a device of the character described, in combination, a support, avane or wing pivoted thereon, a pinion fixed relatively to the said vaneat the pivot thereof, a gear in mesh with said pinion having a partlying at each side of its axis of movement, a rotatable member includingtwo series of extensions, said two series lying at opposite sides ofsaid axis of movement of said gear, the said extensions of the twoseries of extensions adapted to alternately engage the part on saidgear, means constantly tending to impart rotation to the member, in asingle direction, and an escapement in control of said member.

5. In a device of the character described, in combination, a support, avane or wing pivoted thereon, a pinion fixed relatively to the 111i dvane at the pivot thereof, a gear in mesh with said pinion having a partlying at each side of its axis of movement, a rota table memberincluding two series of extensions, said two series lying at oppositesides of said axis of movement of said gear, the said extensions of thetwo series of extensions adapted to alternately engage the part on saidgear, and a manually controlled escapement in control of the member.

6. In combination with mechanism to be oscillated including an extendedpart, a member adapted to oscillate and having engagement 'with saidpart and carrying an extended portion on one of its faces at each sideof its axis of oscillation, and a rotatable member including two seriesof spaced prooscillated including an extended part, a

member adapted to oscillate and having en gagement with said part andcarrying an extended portion on one of its faces at each sire of itsaxis of oscillation, and a rotatable member including two series ofspaced projections on one of its faces, those of one series alternatingin position with those of the other, and lying adjacent to the side ofthe member having the extended portions, the paths of the series ofprojections lying at opposite sides of the axis of the last namedmember, the projections of each series of projections adapted to engagein alternate manner the extended portions of the said last named memberfor imparting an oscillating movement thereto, and means constantlytending to rotate the rotatable member.

8. In combination with mechanism to be oscillated including an extendedpart, a member adapted to oscillate and having engagement with said partand carrying an extended portion on one of its faces at each side of itsaxis of oscillation, and a rotatable member including two series ofspaced projections on one of its faces, those of one series alternatingin position with those of the other, and lying adjacent to the side ofthe member having the extended portions, the paths of the series ofprojections lying at opposite sides of the axis of the last namedmember, the projections of each series of projections adapted to engagein alternate manner the extended port-ions of the said last named memberfor imparting an oscillating movement thereto, means constantly tendingto rotate the rotatable member, and an escapement mechanism engaging thelatter and adapted to permit the rotation thereof at will, and meansconstantly tending to rotate the said rotatable member.

9. In combination with mechanism to be oscillated including an extendedpart, a member adapted to oscillate and having engagement with said partand carrying an extended portion on one of its faces at each side of itsaxis of oscillation, and a rotatable member including two series ofspaced projections on one of its faces, those of one series alternatingin position with those of the other, and lying adjacent to the side ofthe member having the extended portions,

the paths of the series of projections lying at opposite sides of theaxis of the last named member, the projections of each series ofprojections adapted to engage in alternate manner the extended portionsof the said last named member for imparting an oscillating movementthereto, means constantly tending to rotate the rotatable member, and anelectrically controlled escapemen't mechanism engaging the latter andadapted to permit the rotation thereof at will, and means constantlytending to rotate the said rotatable member.

10. In combination with a part to be oscillated and limited in itsextent of opposite directions of movement, and including an extension atopposite sides of its axis of oscillation, a rotatable member includingtwo series of extensions lying in position to engage the extensions ofthe part, said two series being spaced from one another each in aseparate line, one lying at each side of the said axis of oscillation ofthe described part, the extensions of each series being spaced from oneanother, that of one series lying opposite a space between twoextensions of the other series, and means constantly tending to rotatesaid rotatable member.

11. In combination with a part to be oscillated and limited in itsextent of opposite directions of movement, and including an extension atopposite sides of its axis of oscillation, a rotatable member includingtwo series of extensions lying in position to engage the extensions ofthe part, said two series being spaced from one another each in aseparate line, one lying at each side of the said axis of oscillation ofthe described part, the extensions of each series being spaced from oneanother, that of one series lying opposite a space between twoextensions of the other series, means constantly tending to rotate saidrotatable member, and

mechanism for preventing rotation of the rotatable member and forliberating the latter at the will of the operator.

In testimony whereof I aflix my signature, in presence of two witnesses.

GEORGE E. BAIRD. WVitnesses:

L. M. THURLOW, L. O. EAGLETON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). C.

